added qtcreator compability
added compability for qtcreator
changed the pro files back to original and added the
CONFIG+=debug_and_release in the common.pri file
added a clean script similar to make script
Merge pull request #1 from lukedirtwalker/15c466aa7aec7f1c3db7249b572558562783a4f6

Add qtcreator compatability to dev branch